Press shoe for extended nip press for dewatering a fiber web

Details Press shoe for extended nip press for dewatering a fiber web Press shoe for extended nip press for dewatering a fiber web

1992-04-16

1993-06-29

Hastings, Karen M.

Paper making and fiber liberation

Apparatus

Running or indefinite length product forming and/or treating...

100153, 162361, D21F 302

Patent

active

052231003

ABSTRACT:
An extended nip press for the dewatering of a fiber web has an endless flexible press element, like a press jacket or press belt. A press shoe has a concave slide surface for the flexible press element, and the slide surface is adapted to the curve of a backing roll. The shoe is displaceable toward the backing roll in order to press the pressing element against it. A stationary shoe bed, which is detachably connected to a stationary support, has a depression which is provided with a packing and receives the press shoe to form a pressure chamber so that the shoe bed and the press shoe form a cylinder-piston unit. The press shoe is coupled to the shoe bed by means of at least one connecting element. The connecting element is spring biased with respect to the shoe bed and may itself be flexible or be flexibly moved to permit the radial displacement as well as the tilting of the press shoe relative to the shoe bed.

REFERENCES:
patent: 4272317 (1981-06-01), Roerig
patent: 4287021 (1981-09-01), Justus et al.
patent: 4643802 (1987-02-01), Schiel et al.
patent: 4713147 (1987-12-01), Saarinen
patent: 4861434 (1989-08-01), Bonander et al.
patent: 4917768 (1990-04-01), Ilmarinen
patent: 4931142 (1990-06-01), Steiner et al.

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